out in reward for completing the objective in shorter times respectively. These challenges are often placed in the story mode to help train the player for a new type of challenge/puzzle that is coming up. They often require critical thinking or advanced skills in order to attain the silver grub. The times that players complete the challenges are recorded and put up on a leader board to see how a player compares to others. Reception According to the review aggregator Metacritic, the PlayStation 3 and Microsoft Windows versions of Warp received "generally favorable" reviews from publications upon release, while the Xbox 360 version received "mixed or average" reviews. Daemon Hatfield of IGN scored the game an 8.5 out of 10. Hatfield's review was mostly positive, with his only problems with the game being its lack of polish, which he pinned down to lower production values, and ending levels. Even though Hatfield particularly disliked the final boss fight for being the "opposite of fun", he said that the game's level design and core mechanics make up for it by being "so much damn fun". Hatfield also spoke positively of the premise of being an alien against humans, rather than a human against aliens, the humour, and the difficulty balance. GameSpot's Jeremiah Johnson was more critical of the game, summarizing his review by saying: "It's best to take Warp as the carefree fling it's likely meant to be, because anyone looking for a rewarding experience here will find only a charmingly warped vision of games we've seen many times before." Johnson praised the enjoyability of the puzzles, the "charming mix of gore and cuteness", the overall presentation, and the leaderboards. Johnson's main criticisms were concerning the controls and the "trial and error"-nature of some puzzles and encounters. Game Informer's Dan Ryckert also had mixed feelings, stating: "Warp is charming at first, but the simple A.I. and basic puzzles aren’t enough to make it an XBLA standout. Completionists may find replay value in the collectible grubs, basic upgrade system, and challenge rooms, but anyone looking for deeper stealth or puzzle-based gameplay should look elsewhere." Ryckert scored the game a 6.75 out of 10. Dan Whitehead for Eurogamer scored the game a 7/10 in his review and wrote: "The ideas at the heart of Warp are sound and, in general, the game is well paced and introduces its evolutions at just the right time.