I found games ux really transformative , where they almost become work UIs. Everyone pays to learn photoshop, nobody wants to pay to learn to use an UI for a game. Not even in tutorial ttime.

Total annhilation was such a milestone to RTS games UI. Programming unit routes and behaviour via factories was peak intuitiv design. It was such a boost to the experience of strategy compared to the clicks per minute juggling competition that was starcraft.