| A | B |
| substitute | something new or different used in place of something else |
| shed its nerdy image | stop appearing unfashionable or lacking in social skills |
| interactive | involving people working or talking together |
| features | important, interesting, or typical parts of something |
| reinforcements | rewards designed to encourage certain behavior |
| randomly | without any definite plan |
| lose contact with | stop communicating with |
| (go) cold turkey | suddenly stop an activity or give up a substance that you are addicted to |
| go berserk | become very angry and violent in a crazy way |
| obsessive | thinking so much about something that you don't think about other things enough |
| compulsion | a strong desire to do something that is wrong |
| keep an extra close eye on | pay very close attention to |
| capable of | able to do something |
| cooperation | working together with others |
| crave | to want very badly |
| escapist | avoiding reality through fantasy |
| strategy | a plan or method to achieve results |
| gamer | one who plays video games |
| gaming | the act of playing video games |
| to fall back on | to have plan you can use in an emergency |
| to fall for | to be attracted to someone or something; to be tricked |
| to fall behind | to progress more slowly than others |
| to fall into | to end up doing something that you hadn't planned or intended to do |
| to fall off | to decrease |
| to fall through | to be unsuccessful or not meet an expectation |
| to take after | to look or act like someone |
| to take (someone) aside | to talk to someone away from other people |
| to take down | to take notes in a class or meeting |
| to take it out on (someone) | to express anger at someone who may be undeserving of the blame |
| to take (something)over | to take control of a company from someone else |
| to take up | to fill time or space |