diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
index 08243aa..9e9e9b1 100644
--- a/.github/workflows/main.yml
+++ b/.github/workflows/main.yml
@@ -29,6 +29,9 @@ jobs:
         with:
           ocaml-compiler: ${{ matrix.ocaml-compiler }}
 
+      - name: Update apt
+        run: sudo apt update
+
       - name: Install requirements
         run: sudo apt install -y libsdl2-dev
 
diff --git a/day20/bin/main.ml b/day20/bin/main.ml
index 52347c3..3f803a5 100644
--- a/day20/bin/main.ml
+++ b/day20/bin/main.ml
@@ -9,20 +9,14 @@ let tick t s fb _i =
     | 255 -> if special then 255 else 254
     | p -> p - 1
   ) fb;
-  match (Screen.font s) with
-  | None -> fb;
-  | Some (font) -> (
-    let x = Random.int 8 and y = Random.int 8 in
-    let ch = char_of_int (Random.int 256) in
-    let col = if (((t / 200) mod 8) == x) then 255 else 254 in
-    let _ = Framebuffer.draw_char ((x * 22) + 20) ((y * 22) + 15) font ch col fb in ();
-  ); fb
+  let font = Screen.font s in
+  let x = Random.int 8 and y = Random.int 8 in
+  let ch = char_of_int (Random.int 256) in
+  let col = if (((t / 200) mod 8) == x) then 255 else 254 in
+  let _ = Framebuffer.draw_char ((x * 22) + 20) ((y * 22) + 15) font ch col fb in ();
+  fb
 
 let () =
-  match Font.load_psf_font "thirdparty/tamzen-font/psf/TamzenForPowerline10x20.psf" with
-  | Error (reason) -> Printf.printf "Failed to read: %s" reason
-  | Ok font -> (
-    Palette.of_list (List.rev (0xff0000 :: (Palette.to_list (Palette.generate_mono_palette 255)))) |>
-    Screen.create_with_font 200 200 2 font |>
-    Base.run "Genuary 20/23: Generative Typography and 8x8" None tick
-  )
+  Palette.of_list (List.rev (0xff0000 :: (Palette.to_list (Palette.generate_mono_palette 255)))) |>
+  Screen.create 200 200 2 |>
+  Base.run "Genuary 20/23: Generative Typography and 8x8" None tick
diff --git a/filedrop/bin/dune b/filedrop/bin/dune
new file mode 100644
index 0000000..845a3b6
--- /dev/null
+++ b/filedrop/bin/dune
@@ -0,0 +1,4 @@
+(executable
+ (public_name filedrop)
+ (name main)
+ (libraries filedrop claudius giflib))
diff --git a/filedrop/bin/main.ml b/filedrop/bin/main.ml
new file mode 100644
index 0000000..a740425
--- /dev/null
+++ b/filedrop/bin/main.ml
@@ -0,0 +1,77 @@
+open Claudius
+open Giflib
+
+let image : GIF.t option ref = ref None
+
+let draw_gif t s gif fb =
+	let c = GIF.image_count gif in
+	let frame = ((t / 2) mod c) in
+	let i = GIF.get_image gif frame in
+
+	let new_pal = Palette.of_list ( 0x000000 :: 0xFFFFFF :: List.map (fun (r, g, b) ->
+		b + (g * 256) + (r * 256 * 256)
+	) (Array.to_list (Image.palette i))) in
+	Screen.update_palette s new_pal;
+
+	let sw, sh = Screen.dimensions s
+	and gw, gh = GIF.dimensions gif
+	and iw, ih = Image.dimensions i
+	and ixoff, iyoff = Image.offset i
+	and pixels = Image.pixels i in
+	let transparent = match (Image.transparent i) with
+	  | None -> -1
+		| Some x -> x
+	in
+	let sxoff = (sw - gw) / 2
+	and syoff = (sh - gh) / 2 in
+	for x = 0 to (iw - 1) do
+	  for y = 0 to (ih - 1) do
+		let v = pixels.(x + (y * iw)) in
+		if (v != transparent) then
+		Framebuffer.pixel_write (x + sxoff + ixoff) (y + syoff + iyoff) (v + 2) fb
+	  done
+	done;
+
+  fb
+
+let boot s =
+	let fb = Framebuffer.init (Screen.dimensions s) (fun _ _ -> 0) in
+	let font = Screen.font s in
+	ignore (Framebuffer.draw_string 10 10 font "Drop a GIF here" 1 fb);
+	fb
+
+let tick t s prev (inputs : Base.input_state) =
+
+	let filename = List.fold_left (fun acc ev ->
+		match ev with
+		| Event.DropFile pth -> Some pth
+		| _ -> acc
+	) None inputs.events in
+
+	let updated = match filename with
+	| None -> false
+	| Some filename -> (
+		(match Filename.extension filename with
+		| ".gif" -> image := Some (GIF.from_file filename)
+		| _ -> image := None);
+		true
+	)
+	in
+
+	match !image, updated with
+	| None, true -> boot s
+	| None, false -> prev
+	| Some img, false -> (
+		match GIF.image_count img with
+		| 1 -> prev
+		| _ ->  draw_gif t s img prev
+	)
+	| Some img, true -> (
+		Framebuffer.init (Screen.dimensions s) (fun _ _ -> 0) |>
+		draw_gif t s img
+	)
+
+let () =
+	Palette.of_list (0x000000 :: 0xFFFFFF :: (Palette.to_list (Palette.generate_plasma_palette 256))) |>
+	Screen.create 640 480 1 |>
+	Base.run "File drop test" (Some boot) tick
diff --git a/filedrop/dune-project b/filedrop/dune-project
new file mode 100644
index 0000000..fb12a8e
--- /dev/null
+++ b/filedrop/dune-project
@@ -0,0 +1,26 @@
+(lang dune 3.17)
+
+(name filedrop)
+
+(generate_opam_files true)
+
+(source
+ (github username/reponame))
+
+(authors "Author Name <author@example.com>")
+
+(maintainers "Maintainer Name <maintainer@example.com>")
+
+(license LICENSE)
+
+(documentation https://url/to/documentation)
+
+(package
+ (name filedrop)
+ (synopsis "A short synopsis")
+ (description "A longer description")
+ (depends ocaml)
+ (tags
+  ("add topics" "to describe" your project)))
+
+; See the complete stanza docs at https://dune.readthedocs.io/en/stable/reference/dune-project/index.html
diff --git a/filedrop/filedrop.opam b/filedrop/filedrop.opam
new file mode 100644
index 0000000..aed4d6e
--- /dev/null
+++ b/filedrop/filedrop.opam
@@ -0,0 +1,31 @@
+# This file is generated by dune, edit dune-project instead
+opam-version: "2.0"
+synopsis: "A short synopsis"
+description: "A longer description"
+maintainer: ["Maintainer Name <maintainer@example.com>"]
+authors: ["Author Name <author@example.com>"]
+license: "LICENSE"
+tags: ["add topics" "to describe" "your" "project"]
+homepage: "https://github.com/username/reponame"
+doc: "https://url/to/documentation"
+bug-reports: "https://github.com/username/reponame/issues"
+depends: [
+  "dune" {>= "3.17"}
+  "ocaml"
+  "odoc" {with-doc}
+]
+build: [
+  ["dune" "subst"] {dev}
+  [
+    "dune"
+    "build"
+    "-p"
+    name
+    "-j"
+    jobs
+    "@install"
+    "@runtest" {with-test}
+    "@doc" {with-doc}
+  ]
+]
+dev-repo: "git+https://github.com/username/reponame.git"
diff --git a/filedrop/lib/dune b/filedrop/lib/dune
new file mode 100644
index 0000000..ca2552f
--- /dev/null
+++ b/filedrop/lib/dune
@@ -0,0 +1,2 @@
+(library
+ (name filedrop))
diff --git a/filedrop/test/dune b/filedrop/test/dune
new file mode 100644
index 0000000..ad210db
--- /dev/null
+++ b/filedrop/test/dune
@@ -0,0 +1,2 @@
+(test
+ (name test_filedrop))
diff --git a/filedrop/test/test_filedrop.ml b/filedrop/test/test_filedrop.ml
new file mode 100644
index 0000000..e69de29
diff --git a/fonts/bin/main.ml b/fonts/bin/main.ml
index e4f3623..220e52f 100644
--- a/fonts/bin/main.ml
+++ b/fonts/bin/main.ml
@@ -6,27 +6,20 @@ let prose2 = "Hello to FieldFX, thanks for the inspirations and encouragement!"
 let tick t s fb _i =
   let width, height = Screen.dimensions s in
   Framebuffer.map_inplace (fun _ -> 0) fb;
-  match (Screen.font s) with
-  | None -> fb
-  | Some font -> (
-    let prose1_width = Framebuffer.draw_string 0 0 font prose1 0 fb in
-    (* let prose2_width = Framebuffer.draw_string 0 0 font prose2 0 fb in *)
-    let slow_t = t / 20 in
-    let pos1 = (slow_t mod (width + (1 * prose1_width))) - prose1_width in
-    let _ = Framebuffer.draw_string pos1 10 font prose1 (1 + ((slow_t / 10) mod 8)) fb in ();
-    for i = 0 to ((String.length prose2) - 1) do
-      let ft = (Float.of_int t) /. 100. in
-      let c =  String.get prose2 i in
-      let _ = Framebuffer.draw_char (width + ((width - slow_t + (i * 15)) mod width)) ((Int.of_float (40. *. sin ((ft +. Float.of_int(i)) *. 0.1))) + (height / 2)) font c 3 fb in ();
-    done;
-    fb
-  )
+  let font = Screen.font s in
+  let prose1_width = Framebuffer.draw_string 0 0 font prose1 0 fb in
+  (* let prose2_width = Framebuffer.draw_string 0 0 font prose2 0 fb in *)
+  let slow_t = t / 2 in
+  let pos1 = (slow_t mod (width + (1 * prose1_width))) - prose1_width in
+  let _ = Framebuffer.draw_string pos1 10 font prose1 (1 + ((slow_t / 10) mod 8)) fb in ();
+  for i = 0 to ((String.length prose2) - 1) do
+    let ft = (Float.of_int t) /. 100. in
+    let c =  String.get prose2 i in
+    let _ = Framebuffer.draw_char (width + ((width - slow_t + (i * 15)) mod width)) ((Int.of_float (40. *. sin ((ft +. Float.of_int(i)) *. 0.1))) + (height / 2)) font c 3 fb in ();
+  done;
+  fb
 
 let () =
-  match Font.load_psf_font "thirdparty/tamzen-font/psf/TamzenForPowerline10x20.psf" with
-  | Error (reason) -> Printf.printf "Failed to read: %s" reason
-  | Ok font -> (
-    Palette.load_tic80_palette tic80_palette |>
-    Screen.create_with_font 240 136 3 font |>
-    Base.run "Font testing" None tick
-  )
+  Palette.load_tic80_palette tic80_palette |>
+  Screen.create 240 136 3 |>
+  Base.run "Font testing" None tick
diff --git a/keytest/bin/main.ml b/keytest/bin/main.ml
index 584586d..95c9e6b 100644
--- a/keytest/bin/main.ml
+++ b/keytest/bin/main.ml
@@ -4,15 +4,11 @@ let pos = ref (0, 0)
 
 let tick _t s _prev (inputs : Base.input_state) =
   let fb = Framebuffer.init (Screen.dimensions s) (fun _x _y -> 0) in
-  (
-  match (Screen.font s) with
-  | None -> ()
-  | Some font -> (
-    List.iteri (fun i c ->
-      let s = Printf.sprintf "0x%08x" (Base.PlatformKey.to_backend_keycode c) in
-      ignore(Framebuffer.draw_string 5 (i * 12) font s 8 fb)
-    ) (Base.KeyCodeSet.to_list inputs.keys)
-  ));
+  let font = Screen.font s in
+  List.iteri (fun i c ->
+    let s = Printf.sprintf "0x%08x" (Base.PlatformKey.to_backend_keycode c) in
+    ignore(Framebuffer.draw_string 5 (i * 12) font s 8 fb)
+  ) (Base.KeyCodeSet.to_list inputs.keys);
 
   let dx, dy = List.fold_right (
     fun c (x, y) ->
@@ -33,10 +29,6 @@ let tick _t s _prev (inputs : Base.input_state) =
 (* ----- *)
 
 let () =
-  match Font.load_psf_font "thirdparty/tamzen-font/psf/TamzenForPowerline10x20.psf" with
-  | Error (reason) -> Printf.printf "Failed to read: %s" reason
-  | Ok font -> (
-    Palette.of_list (List.rev (Palette.to_list (Palette.generate_plasma_palette 16))) |>
-    Screen.create_with_font 640 480 1 font |>
-    Base.run "Keyboard test" None tick
-  )
+  Palette.of_list (List.rev (Palette.to_list (Palette.generate_plasma_palette 16))) |>
+  Screen.create 640 480 1  |>
+  Base.run "Keyboard test" None tick
diff --git a/paint/bin/main.ml b/paint/bin/main.ml
index 5746334..9027c6d 100644
--- a/paint/bin/main.ml
+++ b/paint/bin/main.ml
@@ -35,16 +35,16 @@ let tick _ s buffer (inputs : Base.input_state) : Framebuffer.t =
 
 	List.iter (fun e ->
 		match e with
-		| Mouse.Button_up (Left, _) -> (
+		| Event.MouseButtonUp (Left, _) -> (
 			last_coord := None;
 		)
-		| Mouse.Button_down (Left, (x, y)) -> (
+		| Event.MouseButtonDown (Left, (x, y)) -> (
 			if (x >= (w - size)) then (
 				col := y / size
 			);
 			last_coord := Some (x, y)
 		)
-		| Mouse.Drag (Left, (x, y)) -> (
+		| Event.MouseDrag (Left, (x, y)) -> (
 
 			match !last_coord with
 			| None -> (
@@ -55,7 +55,7 @@ let tick _ s buffer (inputs : Base.input_state) : Framebuffer.t =
 			)
 		)
 		| _ -> ()
-	) ( Mouse.get_events inputs.mouse);
+	) inputs.events;
 	buffer
 
 let () =
diff --git a/triangles/bin/main.ml b/triangles/bin/main.ml
index 3377416..ff73686 100644
--- a/triangles/bin/main.ml
+++ b/triangles/bin/main.ml
@@ -71,25 +71,18 @@ let tick t s fb _i =
   Framebuffer.draw_circle (width / 2) (height / 2) 100. (col / 3) fb;
   Framebuffer.draw_circle (width / 2) (height / 2) 50. (col / 2) fb;
 
-  match (Screen.font s) with
-  | None -> fb
-  | Some font -> (
-    filled_triangle
-      ((Int.of_float (50. *. (sin (ft)))) + (width / 2))
-      ((Int.of_float (50. *. (cos (ft)))) + (height / 2))
-      ((Int.of_float (150. *. (sin (ft +. (Float.pi *. 1.5))))) + (width / 2))
-      ((Int.of_float (150. *. (cos (ft +. (Float.pi *. 1.5))))) + (height / 2))
-      ((Int.of_float (100. *. (sin (ft +. 2.)))) + (width / 2))
-      ((Int.of_float (100. *. (cos (ft +. 2.)))) + (height / 2))
-      col fb font;
-    fb
-  )
+  let font = Screen.font s in
+  filled_triangle
+    ((Int.of_float (50. *. (sin (ft)))) + (width / 2))
+    ((Int.of_float (50. *. (cos (ft)))) + (height / 2))
+    ((Int.of_float (150. *. (sin (ft +. (Float.pi *. 1.5))))) + (width / 2))
+    ((Int.of_float (150. *. (cos (ft +. (Float.pi *. 1.5))))) + (height / 2))
+    ((Int.of_float (100. *. (sin (ft +. 2.)))) + (width / 2))
+    ((Int.of_float (100. *. (cos (ft +. 2.)))) + (height / 2))
+    col fb font;
+  fb
 
 let () =
-  match Font.load_psf_font "thirdparty/tamzen-font/psf/TamzenForPowerline10x20.psf" with
-  | Error (reason) -> Printf.printf "Failed to read: %s" reason
-  | Ok font -> (
-    Palette.of_list (List.rev (Palette.to_list (Palette.generate_mono_palette 16))) |>
-    Screen.create_with_font 640 480 1 font |>
-    Base.run "Triangle testing" None tick
-  )
+  Palette.of_list (List.rev (Palette.to_list (Palette.generate_mono_palette 16))) |>
+  Screen.create 640 480 1 |>
+  Base.run "Triangle testing" None tick