Games like Diegeon

"Final DOOM" is a horror shooter game that offers both single-player and multiplayer/co-op modes for 2 players. It features two new 32-level episodes, "Evilution" and "The Plutonia Experiment," with intense gameplay and beautiful mechanics. The game's story revolves around seeking revenge against demons and sealing the last gateway to Hell before the undead take over the world. Its beautiful music and the need for grinding add to its overall appeal.

"Mana Spark" is a 2D pixel art dungeon crawler game with rogue-like elements. Fight enemies, bosses, and collect loot to upgrade your character and equipment. Your goal is to free your village from the oppressive Mana Spark corporation by infiltrating their facilities and shutting them down. */ Steam Summary: «Explore a dangerous dungeon, fight challenging enemies, and gather powerful equipment in this 2D rogue-lite adventure!

"Rogue is a single-player Fantasy Role Playing game, where each playthrough is unique due to randomly generated rooms and items. Battle enemies, gather equipment, and discover magical spells in your quest for the Amulet of Yendor. This version, Epyx Rogue , was one of the earliest commercial distributions for IBM PC."

Alchemist of War is a casual card game with crafting elements. Play as the alchemist merchant. Craft weapons using random ingredients. Your customers are from both sides of a war. But you don't have any favorites! As long as they keep paying. And if the fight goes on longer, maybe you can sell more.

In "Xeno Crisis," players control a squad of soldiers battling aliens in a futuristic setting. The game features top-down shooter gameplay with a retro aesthetic and supports both single-player and local co-op modes. With a variety of weapons and enemies, Xeno Crisis offers a challenging and engaging experience for fans of the genre.

"The Slimeking's Tower" is a roguelike game where players must ascend a procedurally generated tower filled with over 100 enemies and bosses to face the grumpy Slimeking. With over 300 items to collect and five game modes, each playthrough offers a unique challenge. Unlock various characters with unique abilities and equipment to aid in your quest to retrieve your people's moustaches.

Legend of Grimrock is a dungeon-crawling RPG where a group of prisoners must navigate deadly ancient tunnels and ruins beneath Mount Grimrock to earn their freedom. Featuring grid-based movement and tactical real-time combat, the game challenges players with intricate puzzles, hidden secrets, and strategic battles. It blends classic dungeon exploration with modern gameplay.

Dark Lord Soffar's Vacation Disruption Be the BOSS! Reverse the role of getting stomped on by the boss, and instead be the end dungeon BOSS to destroy heroes. Summon armies of minions, cast crazy spells, and defeat those pathetic heroes. Now you'll know what it's like to be a true Boss! Quick Summary: Top-Down Survival Shooter where you as an end Boss go up against single heroes. As a boss you hav…

"SFD is a single-player, turn-based strategy game available on Steam. You lead a party of adventurers through randomly-generated dungeons, with the goal of defeating the Lich King Raeleus and the false god NOG. With permadeath, old-school difficulty, and a variety of weapons and skills, SFD offers a challenging and unique blend of RPG and roguelike elements."

"Delver" is a single-player, fantasy hack and slash roguelike game with 90s FPS combat and classic RPG mechanics. The procedurally generated dungeons and permadeath system make for tough, yet engaging gameplay, with no grinding to save you. Despite some bugs, the exceptional visuals and music create a dense and immersive atmosphere, offering lots of replayability. Your mission: delve into the shifting dungeons, find the Yithidian orb, and survive.