Hi! Death in Venice and The Creator and the Creature and The Interrogation are specifically written for 2 players and no GM.

Other than those, I would say Last Escape, Frayed in the Freezing Night..., It was a Clear and Sunny Day and Hungry Cities should probably run fine with only 2 players (they're all GMless games). The Seal will be Broken, One Minute to Midnight, The Stele at the Heart of the Plains and Here/Now might, although it may cause pacing issues.

Thanks for your interest! I hope you get a chance to play some of those :)