What is the fine-grained topic of the following text: With 'Antimatter', Spoil Engine became the first Belgian band in 20 years to sign with Roadrunner International, which led to appearances on national radio ('De Afrekening'), national television and larger venues/festivals such as Graspop (4x), Pukkelpop (2x), AB, Vorst Nationaal and Clubcircuit. Only return the topic.
Spoil Engine's achievements and appearances after signing with Roadrunner International.