Meldpaw: Box Assemble

Drop cats of various sizes into the box cavity. Same-sized cats will fuse into bigger cats upon contact. Prevent cats from slipping outside the box to avoid game over. Remove unwanted cats inside the box via mouse operations or periodic mouse-themed in-game bonuses, then keep merging to unlock every cat design.
Game features:
Vintage metallic room backdrops, preview panel showing upcoming cats, convenient left-side control icons, smooth visual feedback after successful merges.
Strategically arrange each cat drop, execute frequent merges, gather all cat variants and raise your peak score!