Having bought the original Draida set for my litle boy and him enjoying the simple but fun gameplay I decided to get the next set. All the heroica sets can be bought as stand alone sets or even better, linked together to make one big one.
This set is a bit bigger than the original Draida set so when in the standard layout it measure 30cm by 20cm and includes 7 rooms and some linking corridors. It comes with 217 pieces and includes 3 heroes and 8 monsters.
You get a map for 2 different layouts but are not limited by these and can make your own designs.
Apart from the very basic rules you get with the draida set, there are a couple of new ones you can add if you want, things like treasure chests, fallen rocks and a some weapons to buy with gold you find.
Its still as basic to play as you want it and involves rolling your lego dice to move and fight the monsters.
It is a fun game and lasts only 10-20 mins which is long enough for my sons attention to be kept on it, although we will usually play it 3 times in a row!
Hope this helps