Hydra! (subtitled 'The Ultimate Starcruiser?') was one of Grenadier's 'Midi Games' (sic) or 'The Great Little Games Line,' depending on whether you believe the box or the rules. This was a small line of games somewhat larger than a typical mini-game of the day.Hydra! could reasonably be described as 'Ogre in Space.' As in Ogre one player has a single huge unit while the other has many small units. Here the large unit is the eponymous Hydra, which has phasers, proton torpedoes, energy sapper discs, a gyro-de-stabilizer, a molecular structure distorter, and a force field projector. The other player gets frigates, battle cruisers, larger battle cruisers, and mine sweepers. Damage for both sides is marked off on record sheets.The Hydra player's goal is simply to destroy as many enemy ships as possible, but players are invited to make up other scenarios and some extra counters are provided to facilitate this.7001 in the 'Great Little Games Line'. The back of the first (only?) printing's box came with the sheet for the game 'Journey' and listed its part number also as #7001. This same sheet also came with the actual game 'Journey' as well. However, the sides of the boxes had Hydra! as 7001 and Journey as 7002. - BoardGameGeek