With digital platforms like steam where there are zero chances of a game not being in stock prepurchasing benefits are limited to the few bonuses they give out like exclusive skins and crap.

I have bought a game at full price over $40 maybe once a year but not a prepurchase unless they had a free beta before the game was released. Nearly all of them were multiplayer games where I had played the beta with friends and we ended up putting in hundreds of hours.

Sadly, not enough games have free versions to try out so most games I purchase for $40 or less.

I only understand preordering a game these days if someone has bad internet and they preordered a physical copy, or if they are preordering a Collector's Edition that comes with physical stuff like a statue or whatever.

So many good indie games that are under $10 that people sleep on.

If you liked Erikshom then you might also enjoy Desperados 3. It goes on sale very regularly and can likely get a copy for about $5 USD if you wait a little while.

Warframe and Soulframe are free and have provided me over 6000hours of fun over the course of both their launches.