You need to deposit more than £20 to get maximum benefit from the offer as deposits of less than this amount will not award either the initial 100 free spins or the subsequent 100 free spins given over 20 days on a selection of games that appear within your account section as long as you continue logging in every day after making your deposit. You can actually take the whole deal a second time as well if you wish!
Just like I always did back when I took this deal I played my money on NetEnt's "Dead or Alive", but I didn't have any luck on this occasion. That's the thing with this game, sometimes it will shower you with ridiculous thousands of stake wins whereas others it can just burn through your whole balance without ever seeing a decent bonus round, but I certainly got a whole lot of playtime out of the bonus.
I haven't been playing much at Mr Green over the last couple of years, but after giving their website another looking over this week I'm definitely convinced to give them another try at the weekend when I next sit down for a gaming session and if I was a new player today I'd definitely go for a maximum deposit on this bonus and the 35x wagering requirement is very reasonable too.