There are two testing systems within the Inner Tower: the current system designed for Regulars and the ancient system designed for Irregulars. The current testing system was likely implemented after Zahard, the 10 Great Warriors and his helpers had conquered the first 134 Floors of the Tower.
To be more precise, only 2 types of people are allowed to take tests in the Inner Tower: a Regular or an Irregular. A person can't be both or neither.
Current Testing SystemEdit
The tests are created to determine whether the regular is worthy of going to the next floor. Generally the difficulty increases the higher one climbs. There are however a few exceptions, like the 2nd Floor and the 20th floor, where the difficulty is particularly high.
The tests are given to the regulars by either the Guardian of the floor or, more often, by the Guardian's proxy, the floor's Ruler. Each floor's Ruler has the right to decide the exam of his floor. But if the Guardian raises objections, the Ruler must follow the Guardian's wish. () And these exams are then taken by future test takers, politically named as regulars.
To be considered worthy of taking the next test, each Regular must pass all the previous tests. They may only be excluded from taking certain tests if they've "passed early" (Ch 36). There might be other conditions which allow one to be excluded from a certain test but these are unknown yet.
On the 2nd Floor, certain individuals who excelled and received the highest score in the previous test were awarded "Best Seed" (Ch 28). Such people were graded by at least some or all of the Testing Admins and possibly, Yu Han Sung. It's unknown if this term might occur again.
From the 3rd Floor and on, even if a Regular fails, they have the right to retake the tests. Most or all tests on a floor are compulsory and you need to pass a test to proceed to the next. This means if a Regular passed 1 to 2 tests but failed at the next test, he fails the Floor. He has the right to retake the Floor but he must start all over again. This is why Yeon Yihwa and Ja Wangnan are stuck on the 20F and they had to go through the first test and also, take the other tests.
The Guardian's testsEdit
This is an actual fact, the original testing system and designed to test an Irregular. The tests might have involved battling Shinheuh.
Note: For now, it is too early to assume Zahard and the 10 Great Warriors underwent gruelling challenges all the time. It is unknown how the Irregular's Tests were conducted during their time. Was the difficulty level fixed or was it revised after they had taken some tests? Also, the difficulty level of an Irregular's test could be subjected to the Guardian's whim.
Note #2: If we can assume Rachel was allowed to skip the Guardian's Test on the First Floor, then it might be possible Zahard and the 10 Great Warriors might not have taken some of the Tests. (For some strange reason, some of the Floors were conquered by Zahard's Princesses. And this may mean Zahard didn't take the Guardian's Test. It is possible some or all of the 10 Great Warriors didn't take the Test as well. Rather, they might have cut a deal with the Guardian and were allowed to skip a few Guardian's Tests, as long as they took the rest.)
Note #3: These days, an Irregular can choose to take a Guardian's Testing system or he/she can take part in the Regular Testing system.
After being chosen to enter the Tower (Ch 76), an Irregular is then teleported to the First Floor of the Inner Tower to take the Guardian's test (conducted by Headon). And only an Irregular can request to take a Guardian's test (Ch 58). Take note that one cannot become a "chosen one" or an Irregular by participating in the Guardian's test, like Baam's or Rachel's group in the Submerged Fish Hunt test. The Guardian's test itself is binded by a set of the Tower's Rules.
The Guardian's test reflects the "worth of the things" (Ch 4) the Irregular wishes to gain from the Tower and in essence, his desires (Ch 58). How precious are the things he wants which in turn, determines their worth to him? What are the lengths will the Irregular go to obtain his heart's desires and is he willing to undergo challenges to take the journey of fulfilling them at the top? And as he climbs the Tower, will he give up in the the middle of a test or after having passed numerous tests?
When the Irregular passes a Guardian's test, it is possible the Guardian may fulfill part or all of his wishes expressed before the test (Ch 58). However, the wishes made to each Guardian are likely just part of his heart's desires. He will then be teleported to the next Floor (Ch 4), except for the 43rd Floor because the Guardian is dead. But if he fails or gives up while taking the test, he may not pass and he may not ascend to the next Floor. It is unknown if Irregulars who fail to pass a Guardian's test are allowed to retake it or are promptly disqualified from climbing the Tower.
Tests that have been shown in ToGEdit
- Irregular's Test (included The Ball Test. Baam passed. Unknown if Rachel passed or failed.)
- Crown Game (a bonus game).
- The Untrustworthy Room (a bonus game made to find a team for Viole)
- Flower of Zygeana (This was actually a ruse by the rankers to try and get the flower back from Mazino
- A test where one team has to get a key into a box, signalling their win. The exact rules are unknown
- A test conducted in trenches, where one team has to disable the other team's cannons, which lie at opposite ends of the field
No tests because Guardian is dead.
Tests in the Tower also include certain special tests. These tests may or may not assist in further progress in climbing the Tower, but may also carry other kinds of benefits.
Known examples of this kind of tests:
- The Won-sul-sa test taken at The Research Association. Taking this test makes one a certified Won-sul-sa user.
- Iron Man, This is a special contract that only members of the Mule family can obtain, and to do so the family had to take a special test from an unspecified guardian.
- The two mole like drawings under Lero-Ro's eyes, these symbolize that he has passed a special test (what kind of test is unknown).