There's various Sega related prizes on offer each Friday and it's a worldwide comp. The prizes are usually t-shirts or other branded merchandise and games but I have seen an iPod Touch and a console as a prize in the past.

Sega will announce a phrase which you have to DM them. They will say, for example, the 50th person to DM us 'this phrase' wins. In which case you'd DM Sega with 'this phrase' and cross your fingers that you're the 50th to do so.

You need to be following Sega to enter: SEGA (SEGA) on Twitter and they follow you back so you have to DM them in order to play. Twitter only allows you to follow a maximum number of new people per day so don't be put off if you don't get a follow back immediately as they may have reached their limit.