The arcade end of the library is where you find games you can finish in a coffee break. Super Smash Bros. is the quickest to pick up, Open Cadet is an open-source arcade shooter, and Open Digger rebuilds the 1983 maze-digger with eight new mazes and free assets. Mortal Kombat arrives as the 1993 DOS build with its original roster, though that build opens with the manual-based copy-protection word check, so you need the manual or the answer before you reach the character select screen. One entry is not a single game at all: WASM Arcade is a directory that leads to more projects, so treat it as a jumping-off point rather than a title.