This might be a slightly unusual attempt at a prompt, but might draw some appealing unusual options.
The way it goes: Suggest games, ideally the kind that you believe would have relatively broad appeal. Don’t feel bad about downvotes, but do downvote any game that’s suggested if you have heard of it before (Perhaps, give some special treatment if it was literally your game of the year). This rule is meant to encourage people to post the indie darlings that took some unusual attention and discovery to be aware of and appreciate.
If possible, link to the Steam pages for the games in question, so that anyone interested can quickly take a look at screenshots and reviews. And, as a general tip, anything with over 1000 steam reviews probably doesn’t belong here. While I’d recommend that you only suggest one game per post, at the very most limit it to three.
If I am incorrect about downvotes being inconsequential account-wide, say so and it might be possible to work out a different system.
Sanctum (and its sequel Sanctum 2)
It’s a tower defense where you also have guns and go fight alongside your towers as a first person shooter.
Both Sanctum and Sanctum 2 are worth playing and have slightly different vibes. Sanctum 1 is simpler while Sanctum 2 has more complex build crafting. Also Sanctum uses a square grid while Sanctum 2 uses a hexagonal grid, and Sanctum 2 has some tweaked enemy mechanics, including enemies that target destroy the towers or killing the players over just going for the core. I think Sanctum 2 tries to make the player feel more important instead of the towers being the main focus.
Damn, I own this game, its worth boosting so it sucks I had to downvote xD