Developer: Orca Corporation

Orca was a Japanese arcade game maker. It did not produce Atari 2600 cartridges itself: Tigervision converted its arcade games for the console, and those home versions are credited to Orca on this site.
River Patrol (1984) comes from a 1981 Orca arcade game in which you steer a leaking patrol boat upriver and pull drowning people from the water. Espial (1984) is based on Orca’s 1983 shooter: you fly over a huge starship, and one button fires both a laser and missiles at its defences. Springer, a platform game about a rabbit hopping across clouds towards the sun, is listed here too, although AtariAge credits it to a company called Software Electronics.
All three cartridges are rare, River Patrol especially, so the emulator is the easy way in. Start any of them below in your browser.