Someone please lock away my wallet, as the GOG Spring Sale is live and it's full of discounted Linux games.

For this huge sale, GOG are also doing Flash Deals so every 24 hours a couple of games will get a higher than usual discount so you will need to keep going back for the best.

As usual, I try to be somewhat helpful and so I've picked out a bunch I think are probably worth your time and money that are on sale currently:

I would recommend Stellaris too but it's actually cheaper in the Humble Strategy Bundle 2019.

Head on over to GOG for some fresh deals. Their Spring Sale will end on March 28th at 11PM UTC so plenty of time to pick wisely. Also, you can use this link for all Linux games on sale.