This Stellaris DLC further expands the field, in which Stellaris excells: variety. The synthetics play very different from the organic races and will make your games more interesting just by being there. Being able to play them gives more roleplay possibilites but also is very refreshing gameplay wise. There also different kind of robot styles you can play (Assimilator, Exterminator, Service-Bots, etc.).

Hearts of Iron 4 is a grand strategy world war 2 game. In terms of complexity, it is simpler than other paradox titles, but more in depth than most games. The most complex part - the division designer - can be ignored when playing on lower difficulties. HoI 4 is way more accessable than HoI 3. It is very focused on warfare. Beyond that, you have the ability to play unhistorical games, which is refreshing. If that is not enough, there are overhaul mods for it, from mods that just make it more complex to alternate history mods or even fantasy and sci-fi mods like the excellent Fallout mod "Old world blues" or the War of the worlds mod.

Vermintide is a Co-op action game that can be played solo. You embark on missions with friends or bots and work your way trough the environment. On the way, you get attack by waves of enemies that you dispatch in multiple satisfying ways like slashing them, bludgeoning them or burning them. The time and place of the attacks are chosen by an enemy ai, that determins when the team is vulnerable. Along with the chaff enemies, you get attacked by elite enemies with special abilities. After the mission, you get loot for your characters and exp for levelling them up. You get more loot if you find hidden items while in the mission. The game can be played on high difficulties for tactical challenge or on lower difficulties for mindless hacking and slashing. Technically speaking, it could be better optimized. Also, the loot RNG - while not unfair - can be a turn off for some people. All in all nice progression and meaty core gameplay.