I made deposit of 20€ and I got 10€ bonus money into my account. I started to play Dead or alive. At the beginning I had some luck and I managed to raise my balance to around 70€. Later I decided to change the game a little bit and I played Gonzo's Quest and some others. But later luck was not on my side and my balance just falling down towards zero. I tried also some of Microgaming video slots, but nothing changed with my luck. I think it was even worst than at NetEnt games.
At the end I lost the money, but I came back to Dunder Casino when I claimed third deposit bonus. Otherwise I think Dunder is quite good online casino, it has good website look and sometimes it has quite good deposit offers. Sometimes you can get many free spins – around 50 in some of their games for deposit of just 20€; which is not so bad. The wagering requirements here are friendly 25x deposit+bonus amount. I also liked that they don't have many restricted games while you are playing with bonus money.
At many casinos you must be really careful which game you can play and which not. I don't think this is so good, because only one mistake could cost you for all your winnings. Anyway I will rate this bonus with 7 out of 10 possible stars. Maybe second deposit bonus could be a little higher with percentage – at least around 75%. For small deposits 50% does not looks so awesome, well maybe I should start playing with higher deposits. Hehe.