Sniper initially chose to work on Crazy Taxi because it believed the series had "near-perfect gameplay", and wanted to make a true port.
As such, they spoke to contacts at Sega, who were looking to bring games from their catalog to PlayStation Portable, and got permission to port the series,[7] believing that it would make "a lot of sense".
While they initially considered buying an original Crazy Taxi arcade machine from eBay instead, high shipping fees ultimately scuttled the plan.
[7] The creation of the multiplayer mode was considered a challenge, as it required the original games' artificial intelligence (AI) to be modified to support two independently controlled cabs in the same space.
This was further hindered by the fact that the AI was only designed to support single-player gameplay, and the developers decided to work around that rather than change it significantly.
The developers were ultimately forced to lower the amount of AI traffic in multiplayer as compared to single-player, due to a lack of memory on the PlayStation Portable.
Since the custom music player automatically streams data off the Memory Stick, the seek times for the rest of the game improved when using it.
[3] The wireless communication for the games was made more robust than normal, as testers had sent feedback about connection interruptions the developers could not reproduce.
[15] Among positive aspects noted by the reviewers were the value of having both games in a single package and how well the original arcade gameplay translated into a portable version.
GameZone called the arcade rules mode "perfect for a portable system", since it allowed a player to quickly play before work or school.
[23] However, the games were criticized both for the lack of graphical improvements in the port, and the introduction of new technical issues related to the limited hardware they ran on.
[4] The removal of real-world stores and restaurants, and the original soundtrack of Crazy Taxi, was an additional sticking point; Kalata called the omission "weird" and "a little jarring".