Sol Survivor on Steam - $5

[Zero82z]

Link: Save 50% on Sol Survivor on Steam

It's a pretty good tower defense game that includes a campaign and some kind of multiplayer mode, so for $5 you can't really go wrong. There was a free weekend which is now over, but I played a few levels and it seemed pretty good, so I'm picking it up. I'm assuming this is a weekend deal, so that means it'll probably go back to full price around 1PM EST tomorrow.