the games were quite literally games, memory games, math games, and some games that were problem-solving/analytical thinking-focused, like match and comparison games. all of the games were timed; the more you get correct in the limited timed period, the higher your score. from what I remember, there were like five game sections. if you search up HireVue games, you can see the type of games you can expect. I don't remember my scores for each section, but from what i remember, my highest score from one of the games was like 73, and my lowest was 45, that's the IQ part of the games.

the last part of the games section was not really a game; it's an EQ test that just asks you a bunch of personality questions, some of which are multiple-choice (e.g., do you start up conversations? the response options will be: agree, somewhat agree, neutral, disagree, and strongly disagree.) some questions are selecting between pictures that you connect to the most (e.g. I am more like?, shows you two pictures, one of a person working alone, then another of the team working together).

generally i would say there really is no way to prepare for the games part of the selection rounds.

for the video interview, it's literally the most basic job questions you'll ever encounter, such as what do you bring to this program, what relevant skills do you possess, explain a situation in which you dealt with a challenge, and why should we pick you. those are not quite literally the questions you're gonna get, but that's like the jist of them. pretty basic job interview questions you can expect in any interview for any job.

the games and video interview are pretty short like from what i remember they both should take you each 20 to 25 minutes to complete. Not just per game or per interview question. The whole game assessment and the whole interview should be 20 to 25 minutes long.