One Step From Eden

Absolutely incredible game, one of my all-time favorites! I completed all of the achievements and still return occasionally to try advanced challenges. As a deckbuilder, I've found it to be extremely flexible; there are lots of options that work well, and it's fun to try adding a card that you don't usually use and work it into a strategy. The music introduced me to steel_plus who is now one of my favorite game composers. I would also recommend Duelists of Eden; I don't enjoy PvP as much and so have barely played it, but the combat mechanics are naturally suited to PvP. Would highly recommend!

The closest thing to Megaman Battle Network out there. Mixed with, whatever subgenre of roguelite people want to argue Slay The Spire is. The mix of genres actually works pretty well. You build a deck of spellcards over time as you fight battles, visit the shopkeeper literally named Shopkeeper, and fight the other playable characters as bosses. Ideally by the end of the game you should have a fairly optimized deck of cards, otherwise your run is likely going to end in failure. There's almost no story whatsoever, it's just raw gameplay. Same general grid based gameplay as Megaman Battle Network, but your deck is fed to you randomly only to reshuffle once you play every card. Each playable character also has their own unique basic attack and mechanics. My favorite being Terra, who is themed around breaking squares on the opposing side. There's some interesting stuff going on with the deck building aspect. You can delete useless cards, upgrade cards, try to build around some synergy between cards, etc. For example Hazel tends to function well by placing turrets and other objects down and potentially moving them around with cards themed around displacing things. The game is pretty hard. It requires good reflexes and being able dodge while simultaneously trying to setup attacks. The deck building requires planning otherwise you'll have to go through a bunch of bad cards before you can get to the ones your strategy is based around. Good game all around if you want to scratch the itch left by Megaman Battle Network. Although it now has to compete with Megaman Battle Network literally being on Steam which wasn't the case when this game first launched. Still recommend it as it's gameplay isn't a 1 to 1 recreation of Battle Network, but its a harder recommendation given nostalgia fueled gamers can now just buy a collection of the games that probably led them to looking into this.