My most indelible impression of playing Giants for the first time all those years ago was of just how FUN it all was. A great sense of humour (British, naturally) coupled with gorgeous graphics, lively characters, a host of play styles and topped off with THE best creature-stomp levels ever presented in gaming.
Presented in three campaigns, each told from the perspective of one of the 3 races, it weaves a tale of mayhem and madness that will challenge your gaming instincts as much as it delights your senses. My personal favourite was playing as Delphi, Blue-Skinned princesss of the Sea Reapers. Trust me, once she acquires the landscape hopping 'turbo boost' ability, you'll have so much fun with it you'll wonder why nothing similar has appeared in a game before or since!
Giants was a tour de force of imagination and coding mad-skill from late, lamented developers, Planet Moon, and is an essential purchase from this site.