BetRally has improved quite a bit since I played this bonus but as far as I can remember the terms and conditions still look pretty similar. You need to enter a code "BR300" whilst making your first deposit in order to be eligible, something I have forgotten to do occasionally at other casinos and found that support were unable to add the bonus manually as a result, so I'm much more careful to check for any required codes these days whenever I see a "Bonus Code" box during the deposit procedure.
The website promises you can use your bonus funds to play any of the casino's games with this bonus and sure enough the terms have a contribution percentage for everything except for Baccarat and Craps - I don't know anybody who plays these games on-line anyway, but I can only guess that in this particular situation you could still play them if you wished, they just wouldn't contribute to your wagering requirement. You'd certainly have a damn good argument should they refuse to pay you!
As usual slots count 100% however I was pleased (and surprised) to see their was no games listed as excluded on the terms and conditions page. Checking the linked general promotional terms reveals they do prohibit the use of bonus funds "solely to progress through multi level games" with a few examples such as Castle Builder and The Wishmaster as well as a couple of odd ones such as Eggomatic(??). I appreciate the fact they don't specifically prohibit any games but I don't think it's ever a good thing when a rule can be open to interpretation - what exactly constitutes "solely" in the legalese here? Could an advantage player argue that they were playing for other reasons other than just progressing through the bonus levels? I have a feeling this is an area of the casino's terms that will need to be tightened up significantly at some stage!
Wagering is fairly middle of the road at 35x the deposit plus bonus amount - that kind of made my head hurt at first with a 150% match offer, but after doing the sums I decided that a small £20 deposit would be enough as this was a fairly unknown casino for me and I hadn't been very lucky at all with my no deposit welcome bonus just a few minutes earlier. This gave me a starting balance of £50 and a wager requirement of £1,750. Only Microgaming slots were available at the time and I found my balance disappeared very quickly on my favourite 243 ways games.
Although I don't blame the casino whatsoever for my short nights entertainment playing this bonus I haven't been back since - overall this offer is just about average and I've not really had any inclination to give them another try since.