Treasures from the darkest depths of Steam [GA]

While scrolling through the games in the current weeklong deal on Steam Reignfall caught my eye. It seems to have some quite enthusiastic positive reviews, not just the 'it's okay for the low price' types.

Have you ever found some obscure very cheap titles on the Steam store that turned out to be great? Would love to hear recommendations.

HERE is a very short train including Reignfall ending in about 12 hours. If there is a problem with the custom sgtools ruleset please let me know. (Intention is to let everyone with no recent VAC bans and multiple wins to join if they won less than 11 games or have a better than 0.33 sent/won RCV ratio.) First time I tried to do a custom one.

Edit: stupidly linked to my Reignfall GA instead of the Reignfall Steam store page at first. Checked the few people who entered the train through that and you should all be able to pass the rulecheck, I think. Please go through the sgtools link so yours don't come up as invalid entries. Thanks a lot and sorry about the inconvenience.