diff --git a/src/explosion.fnl b/src/explosion.fnl
index ac6f53b..d323e4b 100644
--- a/src/explosion.fnl
+++ b/src/explosion.fnl
@@ -1,3 +1,5 @@
+(import :CoreLibs/crank)
+
 (local reload (require :meta.reload))
 (local {: defmulti} (require :meta.multimethod))
 (local {: inc : dec &as tbl} (require :meta.table))
@@ -8,20 +10,15 @@
 
 (local gfx playdate.graphics)
 
+(local devmode true)
+
 (local update (defmulti #$1))
 (local children (defmulti #$2))
 (local scene (defmulti #$1))
 
 (fn destroy-all [type ctx] (cache.destroy type) (tset ctx type nil))
 (fn destroy-key [type id ctx ?key] (cache.destroy type id) (tset (. ctx type) (or ?key id) nil))
-(fn get-id [?f-id key ctx type] (if ?f-id (?f-id key (. ctx type)) key))
-(fn destroy-keys [type ctx keys ?f-id]
-    (each [_ key (ipairs keys)]
-        (destroy-key type (get-id ?f-id key ctx type) ctx key)))
 (fn destroy-item [type id ctx ?index] (cache.destroy type id) (table.remove (. ctx type) (or ?index id)))
-(fn destroy-items [type ctx indexes ?f-id]
-    (each [_ index (ipairs (tbl.sorted indexes #(> $1 $2)))]
-        (destroy-item type (get-id ?f-id index ctx type) ctx index)))
 
 (update:defmethod :default #nil)
 (children:defmethod :default (fn [val] (iter.ivalues val)))
@@ -71,22 +68,29 @@
           ratio (if (> crank 180) (/ (- 360 crank) -130) (/ crank 130))
           x (* (/ (+ ratio 1) 2) screenw)]
         (for [ibucket 1 bucket.count]
-            (let [buckety (- 230 (* (- ibucket 1) 20))]
+            (let [buckety (+ 190 (* (- ibucket 1) 20))]
                 (doto (sprite :bucket ibucket) (: :moveTo x buckety)))))))
 
 (let [image (make-image 20 30 #(gfx.fillRoundRect 0 0 20 30 6))]
     (defsprite :bomber #(with-image $1 image 0.5 0)))
 
-(fn bomberspeed [ctx] (+ ctx.level 5))
+(fn bomberspeed [ctx] (or ctx.bomberspeed (+ ctx.level 5)))
 (fn bombervelocity [ctx dx]
     (let [sign (if (< dx 0) -1 1)
           speed (math.min (bomberspeed ctx) (math.abs dx))]
         (* speed sign)))
-(fn bombspeed [ctx] (+ ctx.level 3))
-(fn bombcount [ctx] 50)
+(fn bombspeed [ctx] (or ctx.bombspeed (if (< ctx.level 7) (+ ctx.level 3) (+ 9 (/ ctx.level 10)))))
+(fn bombcount [ctx] (or ctx.bombcount 40))
+(fn bombgap [ctx] (or ctx.bombgap 30))
 
 (fn bombdropframecount [ctx]
-    (math.ceil (/ 25 (bombspeed ctx))))
+    (math.ceil (/ (bombgap ctx) (bombspeed ctx))))
+
+(when devmode
+    (tbl.extend state {:dev 
+        {:overrides [:bomberspeed :bombspeed :bombgap :bombcount :level]
+         :funcs     [ bomberspeed  bombspeed  bombgap  bombcount #$1.level]
+         :i 1}}))
 
 (fn drop-bomb [ctx]
     (when (> ctx.bomber.bombs-left 0)
@@ -121,12 +125,22 @@
         (set ctx.level 1)
         (set ctx.score 0)
         (dirty :background)
-        (set ctx.bucket.count 3))))
+        (set ctx.bucket.count 3))
+    (when (and devmode (playdate.buttonJustPressed :up))
+        (playdate.getCrankTicks 6)
+        (set ctx.scene :dev))))
 
 (defsprite :background #(with-bg-draw $1 (fn []
     (gfx.drawLine 0 33 screenw 33)
     (gfx.drawText (tostring state.level) 75 8)
-    (gfx.drawText (tostring state.score) 320 8))))
+    (gfx.drawText (tostring state.score) 320 8)
+    (when (= state.scene :dev)
+        (var y 40)
+        (each [i override (ipairs state.dev.overrides)]
+            (gfx.drawText (.. (if (= i state.dev.i) "** " "  ")
+                              override ": " ((. state.dev.funcs i) state)) 5 y)
+            (set y (+ y 25)))))))
+
 (dirty :background)
 
 (let [image (make-image 14 14 #(gfx.fillCircleAtPoint 7 7 7))]
@@ -143,6 +157,27 @@
     (do-to-children keys update ctx))
 
 (scene:defmethod :ingame #(scene-update [:bomber :bombs :bucket] $2))
+(scene:defmethod :dev (fn [_ ctx]
+    (when (and (playdate.buttonJustPressed :up) (> ctx.dev.i 1))
+        (dec ctx.dev :i))
+    (when (and (playdate.buttonJustPressed :down) (< ctx.dev.i (length ctx.dev.overrides)))
+        (inc ctx.dev :i))
+    (let [key (. ctx.dev.overrides ctx.dev.i)
+          func (. ctx.dev.funcs ctx.dev.i)
+          ticks (playdate.getCrankTicks 6)]
+        (when (playdate.buttonJustPressed :b)
+            (tset ctx key nil))
+        (when (not= ticks 0)
+            (tset ctx key (+ ticks (func ctx)))))
+    (when (and (playdate.buttonJustPressed :left) (> ctx.bucket.count 1))
+        (cache.destroy :bucket ctx.bucket.count)
+        (dec ctx.bucket :count))
+    (when (playdate.buttonJustPressed :right)
+        (inc ctx.bucket :count))
+    (when (playdate.buttonJustPressed :a)
+        (set ctx.scene :ingame))
+    (dirty :background)
+    (scene-update [:bucket] ctx)))
 
 (fn playdate.update []
     (scene state.scene state)