These are the packages that would be merged, in order:

Calculating dependencies ... done!
Dependency resolution took 0.98 s (backtrack: 0/20).

[ebuild  N     ] acct-group/gamestat-0-r3::gentoo  0 KiB
[ebuild  N     ] games-arcade/xjump-2.7.5-r3::gentoo  26 KiB

Total: 2 packages (2 new), Size of downloads: 26 KiB