Play & Time Handheld Games

I'm not entirely sure who makes these games. The distinguishing feature of the handhelds is the "Play & Time" written on them.

Dolphin Box Handheld
Frogs Box Handheld
Grand Prix Box Handheld
Jungle / Woodman Box Handheld
Octopus Box Handheld
Shuttle Voyage Box Handheld
Trojans Box Handheld
Vulture Box Handheld