Planet Zoo

Planet Zoo shows one welfare fix, then makes players solve the rest. The first tutorial walks the player through improving the tigers' terrain. It then asks them to fix the other animals' habitats with hardly any guidance.

The player has to apply what they just learned and fill the gaps by thinking. Offworld Trading Company does something similar by handing over a list of objectives to solve alone.

Planet Zoo uses familiar interface conventions so players can work things out unaided. The welfare list can be sorted because lists work that way on websites. The map icon matches Google Maps, the funnel filter icon matches Google Sheets, and red and green signal bad and good.

Because these conventions are already known from daily-use sites, players can act without being told what each control does.

Planet Zoo scales the whole interface, so icons grow along with text. Planet Zoo, Ghost Recon Breakpoint and Borderlands 3 scale the whole UI rather than only the text. Scalable UI also helps when the same game is streamed to a big TV or a phone.

Text size is where games most often fail on accessibility: "Text size is the area where games most frequently fail, in terms of accessibility." Disco Elysium and Sunless Skies offer text size options instead.

Planet Zoo's subtitles don't match its speech: Trade Center versus Animal Storage. An actor says Trade Center while the subtitle reads Animal Storage. This is a subtitle error of the kind that undermines accessibility.

It is cited as an error related to partial subtitling, where games leave out or misrepresent spoken content. Every spoken line should be subtitled, and accurately.