8. Doom RPG / Doom II RPG (2005 / 2009)
Doom RPG and Doom II RPG were released for mobile phones, with the original RPG being released in 2005 for old-school flip phones. Its sequel would release in 2009 for newer phones like the Blackberry and iPhone. The games told a similar story to Doom 3, but were essentially their own thing. What’s interesting is how they play: like classic turn-based dungeon crawlers. This might seem like a weird fit, but it worked surprisingly well and was a great way to get some Doom action on the go before tech like the Switch and smartphones actually made that feasible. (Yes, Doom was on Gameboy Advance, but in a fairly degraded state.)
