A Nintendo DSi with Homebrew runs DOOM : r/itrunsdoom
DS Doom file - Mod DB
Spongebob Squarepants / Nicktoons: Globs Of Doom- Nintendo DS + Manual Free Ship 785138361765 | eBay
New Nintendo 3DS XL, R4i SDHC RTS Lite and DSDoom | Igor Kromin
BrickLink - Gear DScaseIJ2 : LEGO Armor Case for Nintendo DS (Lite), Indiana Jones, Temple of Doom [Electronics:Indiana Jones:Temple of Doom] - BrickLink Reference Catalog