Severance Web App: Login to get SVR'D Access (trying to build a game, need recommendations)

One of the engineers at the company I work for made a Severance admin login page for a competition we're running.

https://lumon-comp.vercel.app/

Looks cool, I really want to build a game inside as well. Would love some recommendations.

Login credentials for each of the different characters are
employee_1@lumon.com pword: severance
employee_2@lumon.com pword: severance
employee_3@lumon.com pword: severance
employee_4@lumon.com pword: severance

We're an authentication company hence it is only login and the id cards at the moment, but I want to convince the higher ups that it's worthwhile blowing this up into a game so pls leave feedback.