part of the premium collection for PlayStation Plus in 2022, with Trophy support added to the game. Reception Syphon Filter received "universal acclaim" according to the review aggregation website Metacritic. In Japan, where the game was ported and published by Spike on 12 August 1999, Famitsu gave it a score of 31 out of 40. Edge was positive to the game despite borrowing elements from both GoldenEye 007 and Metal Gear Solid and noted that the game's execution could have been better. The blend of a stealth-action hybrid gameplay was praised by most critics. Douglass C. Perry of IGN enjoyed the implemented skill-based action that he considered was "hard to come by in a PlayStation game". Perry praised the game's detail and advanced graphics, but criticised the low resolution and acknowledged the game's imperfect frame rate. GameRevolution similarly praised the attention to detail, calling every texture of the game well planned and rendered. However, they claimed that the graphics were not as good as Metal Gear Solid. They also noted that during some points the game "suffers from many typical PlayStation polygonal errors", causing some textures to become "warped" when viewed from an angle, although they noted that glitches were uncommon and did not affect gameplay in any way. The gameplay and artificial intelligence were the most praised aspects of the game. GameRevolution noted the gameplay was "well above average" and had an excellent replay value, in contrast to games such as Star Fox 64 once completed. Perry praised the game's wide variety of weapons and gadgets, having counted at least thirty different weapons and equipment for the player to use, with the added bonus of secret weapons, adding to the gameplay value. GameRevolution added that the AI was the best part of the game, commending on how certain enemies react on when one of their comrades are killed nearby. IGN similarly praised its AI, pointing out on how every time a level is played the AI would change its behaviour, sometimes hiding behind trees or carrying different weapons. A reviewer from Next Generation praised its unique gameplay and satisfying plot, opining that both contained "some genuinely exciting moments" and labelled it as one of the first quality action games of the year. The game sold more than 900,000 units. Sequels Due to its popularity, Sony commissioned 989 Studios to make various sequels to the game. Syphon Filter 2 was