verb
abide
uh-BYDE/əˈbaɪd/
To follow a rule, decision, or agreement.
The cyclist abides by the rule and walks the bicycle.
Etymology
Old English abidan meant to remain or wait. The later sense of enduring or staying firm under something connects this to accepting a condition or following a decision, usually expressed as “abide by.”
In context
A game, a true game has to be voluntary, has to have rules that both parties accept and are willing to abide by.