A cartridge having a front end and a rear end and capable of connecting to a game apparatus by inserting the cartridge, the front end first, into a cartridge insertion slot of the game apparatus, the cartridge comprising: a terminal placement region that includes a first region and a second region and that includes a plurality of terminals (T1-T16) configured to electrically connect to terminals (P0-P16) of the game apparatus in the cartridge insertion slot, wherein a direction in which the cartridge is inserted into or removed from the cartridge insertion slot is a first direction, and a direction perpendicular to the first direction is a second direction, the second region and the first region are adjacent to each other in the first direction, the first region is closer in the terminal placement region to the front end of the cartridge than the second region is, the plurality of terminals include at least a first data input/output terminal (T6, T9, T12, T14), a second data input/output terminal (T5, T8, T11, T13), a strobe terminal, a clock terminal, a power supply terminal (T7, T10), and a ground terminal (T1, T15), the clock terminal and the first data input/output terminal are in the first region, the strobe terminal and the second data input/output terminal are in the second region, a plurality of long terminals (T1, T4, T7, T10, T15, T16) are each located with a first portion in the first region and a second portion in the second region, the strobe terminal and the clock terminal are sequentially arranged in the first direction, the second data input/output terminal and the first data input/output terminal are sequentially arranged in the first direction, the plurality of long terminals include the power supply terminal and the ground terminal, one of the plurality of long terminals is adjacent to the second data input/output terminal and the first data input/output terminal on at least one side of the one of the long terminals in the second direction, and one of the plurality of long terminals is adjacent to the strobe terminal and the clock terminal on at least one side of the one of the long terminals in the second direction. a terminal placement region that includes a first region and a second region and that includes a plurality of terminals (T1-T16) configured to electrically connect to terminals (P0-P16) of the game apparatus in the cartridge insertion slot, wherein a direction in which the cartridge is inserted into or removed from the cartridge insertion slot is a first direction, and a direction perpendicular to the first direction is a second direction, the second region and the first region are adjacent to each other in the first direction, the first region is closer in the terminal placement region to the front end of the cartridge than the second region is, the plurality of terminals include at least a first data input/output terminal (T6, T9, T12, T14), a second data input/output terminal (T5, T8, T11, T13), a strobe terminal, a clock terminal, a power supply terminal (T7, T10), and a ground terminal (T1, T15), the clock terminal and the first data input/output terminal are in the first region, the strobe terminal and the second data input/output terminal are in the second region, a plurality of long terminals (T1, T4, T7, T10, T15, T16) are each located with a first portion in the first region and a second portion in the second region, the strobe terminal and the clock terminal are sequentially arranged in the first direction, the second data input/output terminal and the first data input/output terminal are sequentially arranged in the first direction, the plurality of long terminals include the power supply terminal and the ground terminal, one of the plurality of long terminals is adjacent to the second data input/output terminal and the first data input/output terminal on at least one side of the one of the long terminals in the second direction, and one of the plurality of long terminals is adjacent to the strobe terminal and the clock terminal on at least one side of the one of the long terminals in the second direction.