Cardian

In short
Super promising, really addicting at the moment
For less than €8, definitely recommend
Some flaws gameplay wise and QoL wise too, but it is currently on sales for less than €8 so yeah, worth to try it out
The good
+ Tons of units
+ Tons of cards, relics etc
+ Challenging but quite fair (in most time)
+ Art style is pretty nice
The bad
- Lack of proper unit controls (i.e. no option to select X units)
- Some bugs? (check Discussion topic "Feedback for the future")
I expand more on stuff that could be improved/ are bugged out in Discussion topic "Feedback for the future"
Will update this review on full release

Nice, sounds are decent, music keeps you going, graphics are nice and simple. Once you get used to the cards and combinations really good game. I'd recommend it for any card gamer :)

it's a fun game but if you fail a level you have to keep playing it until you win from rng or give up, wish there was a way to get stronger in previous levels so we can face the harder ones with more skils and cards

Tentative thumbs up. I'm having quite a bit of fun, but there is one fundamental underlying issue and I'm not sure there is a solution - it's impossible to tell how many units (or, often, even what kinds of units) you have on either side of the castle. Am I low on soldiers on the right or left? Do I need ranged units on one side more than the other? Who knows... your army is just a big mess of jumbled up pixels on either side of the castle with no way to tell how many of specific units you have or even what units there are when it starts to get messy. I'm not sure what the fix for this is, but it's a really big problem.

You can see how it outgrew Ratropolis right now in Early Access because of many new aspects added and replaced.