Suggested By:L.B. Jeffries
Inventory Tetris is a quick joke, and perhaps you don't even really need to play it to get the joke, but the joke is good enough that it's worth noting here.
You've undoubted played any number of games where your character's inventory is, in essence, a square grid, and you position items on the grid -- what you can carry limited not be weight or some other consideration, but by how much you can pack onto the grid.
Matthew Gallant took inventory items from Resident Evil 4, and made a version of Tetris out of them. The soundscape is a mixture of a few sounds from the game, and tinkly Tetris music (I think from the PC rather than GameBoy version, although I could be wrong). Thus, you have to close-pack your inventory items, but according to Tetris rules -- a sardonic commentary on the silliness of this kind of inventory system, in essence.
The link above provides a PC executable; Mac and Linux users can also play, but by installing the Love 2D engine then downloading the game's file -- the link above provides instructions for how to do so.