Pros
You get to work on content that will be played by millions. It's nice to have Rockstar on your CV as it's a big known brand. Instead of getting bank holidays off, they give you the days to take off whenever throughout the year.
Cons
In light of the Rockstar being in the news recently for their 100-hour work weeks during crunch time, I would like to shed my experience on the matter. Long hours and unpaid overtime: I never did a 100-hour work week. But you HAVE to do some amount of overtime to survive. Upper management actively encourage working overtime in every weekly meeting, regardless of deadlines. All overtime at Rockstar North is UNPAID. They say overtime is voluntary, but the problem is, they give you so much work to do, that it is not possible to complete the work given in the normal 37.5hours per week. If you do not work overtime, you will fall behind on your work, and you will be replaced by one of the thousands who are dying to work here. The office is entirely designed to get employees to work for free as much as possible. It's open 24/7 (only shutting around Christmas time), they offer free (albeit unhealthy) canteen meals for those who stay after hours, they give access to unlimited soft drinks, beverages, and coffee, whose fridges are restocked daily, the lighting is just right, everything is designed to make you content with staying longer. Career Opportunities: As a Mission Scripter, career opportunities are nil. I met colleagues who have had the exact same job requirements for 5/6/7+ years. Doing the exact same thing, with a slightly increased pay. Sure, you may get lucky and become a team leader, but most don't, and even if you do, you won't be going any higher, as the positions have already been filled, and there are queues of existing employees ready to fill the spot when it appears. Transferable Skills: Currently Rockstar North use their own game engine, and Mission Scripters must use the in-house scripting language. This is only used at Rockstar, therefore if you want to move to any other games/software dev job, all the time learning and using this scripting language will be for nothing. I talk to colleagues who still work there, and they are depressed. They use their holidays sparingly, as a brief escape from the hard grind. Their daily routine involves working long hours, working on the weekends, work, work, and more work. I invite them to an event, and the response is always "Sorry man, got so much work to do ". If your dream is to dedicate the majority of your waking hours to making Rockstar games for the rest of your life, then this job may actually be for you. If not, then avoid like the plague.