How is “build in” used?

In Free Guy (2021), one line is: “If we can find our original build in the game,”

Which movie is “build in” from?

The clip at the top of this page is from Free Guy (2021).

If we can find our original build in the game,

2 作品で登場 · 1 本目

句動詞

to make sth a permanent part of a larger structure

2 本の映画に登場

1
build sth in
to make sth a permanent part of a larger structure
We're having new wardrobes built in.
2
build sth in
to make sth a permanent part of a system, plan, etc.
A certain amount of flexibility is built into the system.

定義：Oxford Advanced Learner's Dictionary 第 9 版