Hello!
"so answering your question, yes you can. you just need to open the visual basic editor in there." <---- All members of MS Office are also viable? (For example, Powerpoint, Access.)
"That said, VBA is not meant for game development hence why that jam must be challenging and fun." <---- Yes, the jam is actually quite interesting. Each entrant can choose whatever BASIC dialect to develop entry. However, this entrant was so creative. In addition, MS Excel is so versatile!!!!!!!