Professor Jones in Indiana Jones and the Great Circleis a scholar more than an action hero. Sure, he will pull off plenty of death-defying stunts while solving puzzles, hunting down collectibles, and fighting Nazis across his globe-trotting adventures, but combat will never do a thing to add to or improve your abilities. Instead, Adventure Books are the keys to unlocking new and better skills. Sadly, Indy never makes a pitstop to a library on his quest, so we have to find these valuable tomes ourselves. Let’s study up on all the Adventure Books in Indiana Jones and the Great Circle and how they work.
Indiana is smart, but apparently not so smart that just finding an Adventure Book is enough to learn all its secrets. Collecting the book is just the first step, but unlocking its ability requires you to go into the Books tab of the menu, highlight it, and spend your Adventure Points to unlock whatever skill it can grant you. Once you have unlocked it, that skill will be permanently active from that point forward.
There are dozens of Adventure Books in Indiana Jones and the Great Circle, but many of them are upgraded versions of the same one that simply boost their power. Here is a full list of all the Adventure Books, what skill the provide, how many Adventure Points (AP) it costs to unlock, and what level you can find them in.
Restores stamina when you knock out an enemy – Costs 25 AP
When knocked out, gives you a chance to pick up your hat and get back up – Costs 125 AP
Increases unarmed damage in hand-to-hand combat – Costs 200 AP
The last hit before a weapon breaks deals increased damage – Costs 300 AP
Boosts stamina recovery speed – Costs 275
Climbing over ledges is faster and costs less stamina – Costs 100
Increase damage with melee weapons – Costs 750 AP
Further increases unarmed damage in hand-to-hand combat – Costs 400 AP
Increase HP regeneration speed – Costs 250 AP
You can hold enemies in a grab for longer – Costs 225 AP
Merges two HP bars into one – Costs 250 AP
Increases how many bandages you can hold by 1 – Costs 250 AP
Extends your stamina bar – Costs 5, 10, 15 Medicine Bottles
Expands your maximum HP – Costs 5, 10, 15 Medicine Bottles
Allows you to hold twice as many fruit – Costs 250 AP
You can knock out small and medium-sized enemies from stealth with your whip – Costs 200 AP
Reveals the location of the associated collectibles on the map – Costs 300 AP each
Reduces the time it takes for your HP to regenerate – Costs 550 AP
Increase damage with melee weapons – Costs 750 AP
Further boosts stamina recovery speed – Costs 575 AP
Heavy enemies can be whip-pulled into a grab – Costs 325 AP
One-handed guns deal more damage – Costs 500 AP
Take less damage on your last HP bar – Costs 450 AP
Carry twice as much bread – Costs 400 AP
Shows all radio frequency, book, and mystery locations on the map – Free once found or purchased
Two-handed guns deal more damage – Costs 775 AP
Perfect Dodge grants a stamina boost – Costs 500 AP
Carry 6 more handgun bullets – Costs 950 AP
Knock out heavy enemies with your whip from stealth – Costs 650 AP
Cuts the cooldown for the Lucky Hat ability in half – Costs 500 AP
Marks associated points of interest on the map – Free once found
Shows the locations of Ziggurats on the map – Free once found
