Simātsan

Simatsan is a tutorial conlang spoken by a people living on an isolated tropical island.

Phonotactics
The language is CV at first, but would then become CVC.

Sound changes
Originally, [h] is part of the phonological inventory, and [ʃ], [tʃ], [b], [d], and [g] were absent. But upon the transition from the proto-lang to the modern version, the following changes happen:


 * Vowels would be lost between unvoiced obstruents in unstressed syllables, resulting in consonant clusters.
 * [h] would be lost between vowels creating diphthongs like [ai] that would become [ay], [au] that would become [aw] and so forth.
 * The voiceless stops would become voiced stops between vowels, resulting in [b], [d], and [g] getting in the phonology.
 * The clusters of voiceless stops would lead to the first in the pair being lost, leading to the lengthening of the preceding vowel.
 * [h] would be lost in the remaining environments, leading to the lengthening of the preceding sound.
 * Vowels would also be lost between nasals and obstruents, leading to nasal assimilation, like [m] becoming [n] before alveolar obstruents, and [n] becoming [m] before labial obstruents and [ŋ] before velar sounds. [ŋ] would only be an allophone of [n].
 * Some consonants would become palatalized before the front vowels [i] and [e], leading to [k], [t], and [ts] becoming [ʃ] and [tʃ] before [j].
 * Palatalization would also lead to the loss of word-final short vowels, the shortening of word-final long vowels, and the simplification of word-final diphthongs li e [aj] and [aw] becoming long vowels like [aː].

Grammar
In the seventh video on Biblaridion's tutorial; The following case were shown. There is not any declensions of any kind.

Writing System
The eighth video on Biblaridion's tutorial would tell its viewers that some natural languages would go their entire lives without writing systems, so not all naturalistic conlangs for worldbuilding projects would have to have those. But if the viewers DOES decide to give their naturalistic language a writing system, then there would certain steps. For the sample language, the writing system would begin as a logography, with the speakers carving the glyphs into trees using flint or obsidian knives, resulting in the writing direction being from top-to-bottom.

Later on, the speakers could write the glyphs on palm leaves, the vein structure altering the style of the glyphs by making them more curvilinear. From there, the logographs would start to represent certain sounds, leading to the creation of a rebus principle, where the final glyph in a word hints at it's meaning, and how the word sounds are based on the preceding glyphs based on what the reader is inferring. Sometime later, the reader would use certain logographs to refer to certain sounds they make that are consonant-vowel pairs, or independent vowels. This and the rebus principle would later lead to the beginning of a syllabary. All of this would happen before the first sound change.

The moment the vowels are lost between voiceless stops, the readers would ignore the sound change, leading to historical spelling. Though later on, with the sound changes where [h] and the voiceless plosives are lost in coda position, and [h] is later lost in all environments, the symbols representing their syllable characters would be ditched. And with voiceless stops having become voiced, some glyphs would be modified with a diacritic on the right side of the voiceless glyphs to symbolize the syllable characters for the voiced stops. This would mark the first spelling reform. Another one would take place in which, as a result of the vowel loss, the glyphs for the syllables ending with [a] would get another diacritic on the left side to show that the consonant is not followed by a single vowel. The glyphs for the [h] syllables are kept to lengthen the preceding vowel. The glyphs for the palatalized versions of existing sounds would not get their own glyphs, and only be represented by other ones. Finally, more glyphs would be formed and used for punctuation.