We’re about to boost through Jam’s iterations and development pretty quickly, so don’t blink!
1- Look at Jam’s Hat! His design was very much in line with those of both Yeah and Fury, with the addition of a hammer and what are supposed to be wispy tendrils (not stink lines). His eyes were half moons and pupil-less, all lending towards this concept of being possessed by a powerful demon. A carryover from an old Facebook joke, the concept was quickly dropped.
2- We dropped the demon stink, but we wanted to retain that punky coolness. His hat now hooked, and the hammer started getting new details. You can see a tiny remnant of some movement notes above his head. Jam’s our Mr. Navigation, so we payed careful attention to his movement options. He had to provide the distance to Yeah’s precision and Fury’s utility without completely erasing the need for their feet, so we specced him out to be heavy and slippery. He would be super fluid and functional at high levels of play, but challenging enough to encourage use of the other two dudes until you were comfortable playing.
3- Jam stayed relatively true to the previous iteration when the first game hit Newgrounds. The challenge of controlling him created an interesting contrast to his personality; Jam sounded confident he could stay on that block, but you slipped and slid all over the place until you got to know him better. That dynamic helped to shape how Jam would grow as a character. But at this state we were worried over people calling his hammer a mailbox.
4- The mailbox transformed back into a proper hammer at this next iteration, but one more noticeable change is Jam’s eyes. The half-moon eyes painted this dude as more sinister than he really was, so we gave them a different shape: more natural, but still sharp to maintain the cool factor. To be honest, leaving out the pupils again felt more like a legacy decision than an active choice. However it worked out nicely! People tend to focus on a subject’s eyes first when looking at a face, which would be fine if Jam was the only character. The blank eyes line up really well next to Fury’s simpler eyebrows and Yeah’s tongueless mouth, and all three still read well during gameplay.
5- This brings us to current Jam! This dude went from edgy, to edgy-cool, to cool-but-not-overly-loud-about-it. You also get to see a bit more of that uneasiness come out now that he runs up walls rather than sticks to them. That is, when he's not falling down a pit.

Were about to boost through Jams iterations and development pretty quickly, so dont blink!
1- Look at Jams Hat! His design was very much in line with those of both Yeah and Fury, with the addition of a hammer and what are supposed to be wispy tendrils (not stink lines). His eyes were half moons and pupil-less, all lending towards this concept of being possessed by a powerful demon. A carryover from an old Facebook joke, the concept was quickly dropped.
2- We dropped the demon stink, but we wanted to retain that punky coolness. His hat now hooked, and the hammer started getting new details. You can see a tiny remnant of some movement notes above his head. Jams our Mr. Navigation, so we payed careful attention to his movement options. He had to provide the distance to Yeahs precision and Furys utility without completely erasing the need for their feet, so we specced him out to be heavy and slippery. He would be super fluid and functional at high levels of play, but challenging enough to encourage use of the other two dudes until you were comfortable playing.
3- Jam stayed relatively true to the previous iteration when the first game hit Newgrounds. The challenge of controlling him created an interesting contrast to his personality; Jam sounded confident he could stay on that block, but you slipped and slid all over the place until you got to know him better. That dynamic helped to shape how Jam would grow as a character. But at this state we were worried over people calling his hammer a mailbox.
4- The mailbox transformed back into a proper hammer at this next iteration, but one more noticeable change is Jams eyes. The half-moon eyes painted this dude as more sinister than he really was, so we gave them a different shape: more natural, but still sharp to maintain the cool factor. To be honest, leaving out the pupils again felt more like a legacy decision than an active choice. However it worked out nicely! People tend to focus on a subjects eyes first when looking at a face, which would be fine if Jam was the only character. The blank eyes line up really well next to Furys simpler eyebrows and Yeahs tongueless mouth, and all three still read well during gameplay.
5- This brings us to current Jam! This dude went from edgy, to edgy-cool, to cool-but-not-overly-loud-about-it. You also get to see a bit more of that uneasiness come out now that he runs up walls rather than sticks to them. That is, when he's not falling down a pit.