Commander Keen 4: Secret of the Oracle – DOS Classic GBA Port, Shadowlands | GBA

Commander Keen 4: Secret of the Oracle – id Software’s 1991 DOS Classic Ported to GBA
Before Billy “Commander Keen” Blaze could destroy the Shikadi’s Omegamatic in episode 5, he had to find out who the Shikadi even were. Secret of the Oracle is the first chapter of the Goodbye, Galaxy duology — the entry point into id Software’s second Commander Keen series, and the one that sets the entire story in motion. An intercepted alien transmission warns of a threat to the galaxy, but the Oracle that holds the answers has gone silent. Its eight Council Members have been kidnapped and scattered across the Shadowlands, and it’s up to eight-year-old genius Billy Blaze to get them back.
Where Keen 5 takes place aboard a sleek alien spacecraft, Secret of the Oracle is set in the organic, hostile terrain of the Shadowlands: a world of poison slugs, giant mosquitoes, and hopping carnivorous mushrooms, navigated through a top-down overhead map that lets you pick your path between levels. Some areas are island-locked — you’ll need to track down a wetsuit before certain levels even become accessible, adding a light exploration layer on top of the core platforming.
The gameplay is classic Keen: raygun to stun enemies, pogo stick for high jumps, gems as keys, and raindrops to collect for extra lives. The full game is intact in this GBA port by john314thegeekygenius, making it a genuine piece of DOS platformer history playable on a cartridge for the first time.
Pick this up alongside Commander Keen 5 from the store to play the complete Goodbye, Galaxy duology back to back.
Credits: Port by john314thegeekygenius · Original game by id Software (1991)
🎮 Compatible with: Game Boy Advance · GBA SP · DS · DS Lite · Game Boy Micro
✅ Available in 6 shell colors: Clear Green, Gray, Red, Clear Blue, Green, Clear Red