Keep a game plan on paper
Use a whole sheet, these empty places or faithful spoken/sign/AAC words. Keep only the parts you want. A helper can record your exact offered ideas.
1. My game purpose
2. My broad parts
3. Ready setup
4. My first and next instructions
5. Getting ready again
6. Who would act / who actually acted
7. Actual result, report or unknown
8. Keep, change or question — my reason
Keep and compare
Keep a copy of one own version, make another if wanted, and put them beside each other. Read each purpose, parts, setup, steps, ready-again instruction, actor, result and reason. Choose what you want to keep; changing words is not proof a game improved. A blank is no response; a written 0 is a literal offered value.
You can leave an after result open, or write unknown when it is actually unknown. Use not tried only if no action happened. A supplied story does not become your event. Keep it private or return later.
Grown-up help
Offer speech, sign, AAC, pointing, drawing, faithful dictation, usual home-language support when competent, private work, pause, rest or finish. Ask one part at a time and keep its meaning. No partner, winner, score, time limit or fixed response length is required. Use only locally suitable broad whole paper/card, a checked marking tool and a stable comfortable table. A helper may act exactly as directed; keep the child's idea and the actual operator's action separate. Record an actual event only when it happened. A missing record can mean unknown; it does not establish that no action happened. A supplied story remains fiction.
This is a full paper twin of the eight-field tool, not a child-making or familiarity certificate.