The phrase "giant bugs" refers to unusually large insects or creepy crawlers that are much bigger than the usual size we're used to seeing. Full definition
Its setting, a land of almost complete darkness, makes its infestation of giant bugs all the more menacing. (comicattack.net)
Sometimes you just want to shoot giant bugs for a bit. (co-optimus.com)
That creature is a beautifully designed, genuinely horrifying giant bug with telescoping ears that can pick the sound of «lunch» from a distance. (eclipsemagazine.com)