Portal Stories: Mel on Steam - It's a Portal 2 Mod that has new puzzles and is the length of or longer than the full game. - and free if you already have portal 2 which is nice

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Consoles + handhelds

Nintendo consoles:

/s/nintendo
/s/nes
/s/snes
/s/n64
/s/gamecube
/s/wii
/s/wiiu
/s/switch

Nintendo handhelds:

/s/gameboy
/s/gameboycolor
/s/gameboyadvance
/s/3ds

Other:

/s/amiga
/s/c64
/s/pcgaming

Popular video game series

/s/animalcrossing
/s/donkeykong
/s/finalfantasy
/s/fzero
/s/kirby
/s/mario
/s/megaman
/s/metroid
/s/pokemon
/s/smashbros
/s/xenoblade
/s/zelda

Video gaming in general

/s/emulation
/s/gamedeals
/s/gamedev
/s/gamemusic
/s/gamephysics
/s/speedrun

Other

/s/oldschoolrunescape